LXR linux/arch/arm/include/asm/mach/arch.h

   1/*
   2 *  arch/arm/include/asm/mach/arch.h
   3 *
   4 *  Copyright (C) 2000 Russell King
   5 *
   6 * This program is free software; you can redistribute it and/or modify
   7 * it under the terms of the GNU General Public License version 2 as
   8 * published by the Free Software Foundation.
   9 */
  10
  11#ifndef __ASSEMBLY__
  12
  13struct tag;
  14struct meminfo;
  15struct sys_timer;
  16
  17struct machine_desc {
  18        unsigned int            nr;             /* architecture number  */
  19        const char              *name;          /* architecture name    */
  20        unsigned long           boot_params;    /* tagged list          */
  21        const char              **dt_compat;    /* array of device tree
  22                                                 * 'compatible' strings */
  23
  24        unsigned int            nr_irqs;        /* number of IRQs */
  25
  26        unsigned int            video_start;    /* start of video RAM   */
  27        unsigned int            video_end;      /* end of video RAM     */
  28
  29        unsigned int            reserve_lp0 :1; /* never has lp0        */
  30        unsigned int            reserve_lp1 :1; /* never has lp1        */
  31        unsigned int            reserve_lp2 :1; /* never has lp2        */
  32        unsigned int            soft_reboot :1; /* soft reboot          */
  33        void                    (*fixup)(struct machine_desc *,
  34                                         struct tag *, char **,
  35                                         struct meminfo *);
  36        void                    (*reserve)(void);/* reserve mem blocks  */
  37        void                    (*map_io)(void);/* IO mapping function  */
  38        void                    (*init_early)(void);
  39        void                    (*init_irq)(void);
  40        struct sys_timer        *timer;         /* system tick timer    */
  41        void                    (*init_machine)(void);
  42#ifdef CONFIG_MULTI_IRQ_HANDLER
  43        void                    (*handle_irq)(struct pt_regs *);
  44#endif
  45};
  46
  47/*
  48 * Current machine - only accessible during boot.
  49 */
  50extern struct machine_desc *machine_desc;
  51
  52/*
  53 * Machine type table - also only accessible during boot
  54 */
  55extern struct machine_desc __arch_info_begin[], __arch_info_end[];
  56#define for_each_machine_desc(p)                        \
  57        for (p = __arch_info_begin; p < __arch_info_end; p++)
  58
  59/*
  60 * Set of macros to define architecture features.  This is built into
  61 * a table by the linker.
  62 */
  63#define MACHINE_START(_type,_name)                      \
  64static const struct machine_desc __mach_desc_##_type    \
  65 __used                                                 \
  66 __attribute__((__section__(".arch.info.init"))) = {    \
  67        .nr             = MACH_TYPE_##_type,            \
  68        .name           = _name,
  69
  70#define MACHINE_END                             \
  71};
  72
  73#endif
  74